Open heart surgery for aortic or mitral valve repair or replacement has traditionally required opening the patient’s chest through their sternum (breast bone). In many cases today, a minimally ...

The failure to do routine maintenance on a key gate valve in the Hetch Hetchy water system contributed to the crisis that briefly cut deliveries in half last month, San Francisco's top utility ...

Maintaining valves throughout a plant’s lifetime helps to preserve optimal performance, minimize supply disruptions and ...